#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>

int main(void) {
    int x = 1, a = 0, b = 0;
    switch (x) {
    case 0:  b++;
    case 1:  a++;
    case 2:  a++; b++;
    }
    printf("a=%d,b=%d\n", a, b);
    return 0;
}